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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * This file contains tests that walks a question through the immediate feedback
 * behaviour.
 *
 * @package    qbehaviour
 * @subpackage immediatefeedback
 * @copyright  2009 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

global $CFG;
require_once(__DIR__ . '/../../../engine/lib.php');
require_once(__DIR__ . '/../../../engine/tests/helpers.php');

/**
 * Unit tests for the immediate feedback behaviour.
 *
 * @copyright  2009 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class qbehaviour_immediatefeedback_walkthrough_test extends qbehaviour_walkthrough_test_base {
    public function test_immediatefeedback_feedback_multichoice_right() {

// Create a true-false question with correct answer true.
        $mc = test_question_maker::make_a_multichoice_single_question();
        $this->start_attempt_at_question($mc, 'immediatefeedback');

$rightindex = $this->get_mc_right_answer_index($mc);
        $wrongindex = ($rightindex + 1) % 3;

// Check the initial state.
        $this->check_current_state(question_state::$todo);
        $this->check_current_mark(null);
        $this->check_current_output(
                $this->get_contains_question_text_expectation($mc),
                $this->get_contains_mc_radio_expectation(0, true, false),
                $this->get_contains_mc_radio_expectation(1, true, false),
                $this->get_contains_mc_radio_expectation(2, true, false),
                $this->get_contains_submit_button_expectation(true),
                $this->get_does_not_contain_feedback_expectation());

// Save the wrong answer.
        $this->process_submission(array('answer' => $wrongindex));

// Verify.
        $this->check_current_state(question_state::$todo);
        $this->check_current_mark(null);
        $this->check_current_output(
                $this->get_contains_mc_radio_expectation($wrongindex, true, true),
                $this->get_contains_mc_radio_expectation(($wrongindex + 1) % 3, true, false),
                $this->get_contains_mc_radio_expectation(($wrongindex + 1) % 3, true, false),
                $this->get_contains_submit_button_expectation(true),
                $this->get_does_not_contain_correctness_expectation(),
                $this->get_does_not_contain_feedback_expectation());

// Submit the right answer.
        $this->process_submission(array('answer' => $rightindex, '-submit' => 1));

// Verify.
        $this->check_current_state(question_state::$gradedright);
        $this->check_current_mark(1);
        $this->check_current_output(
                $this->get_contains_mc_radio_expectation($rightindex, false, true),
                $this->get_contains_mc_radio_expectation(($rightindex + 1) % 3, false, false),
                $this->get_contains_mc_radio_expectation(($rightindex + 1) % 3, false, false),
                $this->get_contains_correct_expectation());
        $this->assertEquals('A',
                $this->quba->get_response_summary($this->slot));

$numsteps = $this->get_step_count();

// Now try to save again - as if the user clicked next in the quiz.
        $this->process_submission(array('answer' => $rightindex));

// Verify.
        $this->assertEquals($numsteps, $this->get_step_count());
        $this->check_current_state(question_state::$gradedright);
        $this->check_current_mark(1);
        $this->check_current_output(
                $this->get_contains_mc_radio_expectation($rightindex, false, true),
                $this->get_contains_mc_radio_expectation(($rightindex + 1) % 3, false, false),
                $this->get_contains_mc_radio_expectation(($rightindex + 1) % 3, false, false),
                $this->get_contains_correct_expectation());

// Finish the attempt - should not need to add a new state.
        $this->quba->finish_all_questions();

// Process a manual comment.
        $this->manual_grade('Not good enough!', 0.5, FORMAT_HTML);

// Verify.
        $this->check_current_state(question_state::$mangrpartial);
        $this->check_current_mark(0.5);
        $this->check_current_output(
                $this->get_contains_partcorrect_expectation(),
                new question_pattern_expectation('/' . preg_quote('Not good enough!', '/') . '/'));

// Now change the correct answer to the question, and regrade.
        $mc->answers[13]->fraction = -0.33333333;
        $mc->answers[15]->fraction = 1;
        $this->quba->regrade_all_questions();

$autogradedstep = $this->get_step($this->get_step_count() - 2);
        $this->assertEquals($autogradedstep->get_fraction(), -0.3333333, '', 0.0000001);
    }

public function test_immediatefeedback_feedback_multichoice_try_to_submit_blank() {

// Create a true-false question with correct answer true.
        $mc = test_question_maker::make_a_multichoice_single_question();
        $this->start_attempt_at_question($mc, 'immediatefeedback');

// Submit nothing.
        $this->process_submission(array('-submit' => 1));

// Verify.
        $this->check_current_state(question_state::$invalid);
        $this->check_current_mark(null);
        $this->check_current_output(
                $this->get_contains_mc_radio_expectation(0, true, false),
                $this->get_contains_mc_radio_expectation(1, true, false),
                $this->get_contains_mc_radio_expectation(2, true, false),
                $this->get_contains_submit_button_expectation(true),
                $this->get_does_not_contain_correctness_expectation(),
                $this->get_does_not_contain_feedback_expectation(),
                $this->get_contains_validation_error_expectation());
        $this->assertNull($this->quba->get_response_summary($this->slot));

// Finish the attempt.
        $this->quba->finish_all_questions();

// Verify.
        $this->check_current_state(question_state::$gaveup);
        $this->check_current_mark(null);
        $this->check_current_output(
                $this->get_contains_mc_radio_expectation(0, false, false),
                $this->get_contains_mc_radio_expectation(1, false, false),
                $this->get_contains_mc_radio_expectation(2, false, false));

// Process a manual comment.
        $this->manual_grade('Not good enough!', 0.5, FORMAT_HTML);

public function test_immediatefeedback_feedback_multichoice_wrong_on_finish() {

// Create a true-false question with correct answer true.
        $mc = test_question_maker::make_a_multichoice_single_question();
        $this->start_attempt_at_question($mc, 'immediatefeedback');

$rightindex = $this->get_mc_right_answer_index($mc);
        $wrongindex = ($rightindex + 1) % 3;

// Save the wrong answer.
        $this->process_submission(array('answer' => $wrongindex));

// Finish the attempt.
        $this->quba->finish_all_questions();

// Verify.
        $this->check_current_state(question_state::$gradedwrong);
        $this->check_current_mark(-0.3333333);
        $this->check_current_output(
                $this->get_contains_mc_radio_expectation($wrongindex, false, true),
                $this->get_contains_mc_radio_expectation(($wrongindex + 1) % 3, false, false),
                $this->get_contains_mc_radio_expectation(($wrongindex + 1) % 3, false, false),
                $this->get_contains_incorrect_expectation());
        $this->assertRegExp('/B|C/',
                $this->quba->get_response_summary($this->slot));
    }
}